457 Chromatic Dragon Crystal

But William had just been startled by a level 15 Fire Salamander. How could he not feel embarrassed? And it even happened in front of everyone...

After speaking, the high-level mana crystal at the end of his magic staff shone with a bright light. Three hollow sounds echoed as three brilliant Wind Blades appeared. A blood-curdling shriek could be heard as the Fire Salamander was wounded by the attack, and dark red blood splattered everywhere.

And that Fire Salamander was also sent flying by the force of the impact.

Then...

In front of everyone's shocked eyes, the Fire Salamander's corpse fell in the center of the array. In a flash, the originally inert array was suddenly activated. It burst with a dazzling light and numerous runes rose up into the air, illuminating the entire area.